Vulganizer



UNITED STATES PATENT OFFICE.

JAMES FERGUS, OF PHILADELPHIA, PENNSYLVANIA.

VU LCANIZER.

SPECIFICATION forming part of Letters Patent No. 449,470, dated March 31, 1891. Application filed August 11, 1890- Serial No. 361.683- (No model.)

To all whom it may concern:

Beit known that I, J AMES FERGUS, of Philadelphia, in the county of Philadelphia and State of Pennylvania, have invented a new and useful Improvement in Vulcanizers, of which the following is a full, clear, and exact description. I

My invention relates .to an improvement in vulcanizers, and has for its object to improve and simplify the construction of such devices and to provide the supporting-casing with a removable supporting and clamping ring.

The invention consists in the novel construction and combination of the severalparts, as will be hereinafter full set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming apart of this specification, in which similar figures and letters of reference indicate corresponding parts in all the views.

Figure 1 is a central vertical section through a vulcanizer having my improvements applied. Fig. 2 is a partial bottom plan view of the ring, and Fig. 3 is a detail inside view of the stand.

The bowl 10 of the vulcanizer at its upper edge is bent horizontally outward and vertically downward to provide an annular under groove 11. The base or stand 12 may be of any suitable or approved construction. The said base or stand, however, is provided in the outer face at its upper end with vertical recesses 13 and near the top with an interior annular shoulder 13. In the upper portion of the base or stand a ring A is supported, which ring has integral with its upper edge an annular rib 14, and below said. rib upon its outer face an exterior thread 15 is formed. The exterior lower portion 15 of the ring is of less diameter than thethreaded portion and is adapted to enter the base and rest upon its shoulder 13". The lower re duced surface of the ring below the threaded surface 15 is provided with two or more lugs 16, located at suitable intervals apart, which lugs may be cast integral with the ring or be attached thereto. The lugs are adapted to fit into the recesses 13 of the base or stand, and are secured to the latter by means of screws 17 or equivalent fastening devices. hen the ring is in position upon the base,

the shoulder formed by the lower reduction thereof rests upon the top edge of the base.

In operation, the ring having been attached to the base or stand, the bowl 10 is supported by the ring, as illustrated in Fig. 1, the rib 14 of the ring being made to enter the under annular groove 11 of the bowl, and all the parts are brought together by means of the usual cap 19, which cap is interiorly threaded and is screwed upon the exteriorly-threaded surface 15 of the ring, as is likewise best shown in Fig. 1. It will thus be observed that as the ring is secured to the stand at a few points only in its circumference expansion and contraction of the ring is amply provided for, and, when desired, the ring may be expeditiously and conveniently removed from connection with the base.

Having thus described myinvention, I claim as new and desire to secure by Letters Patent- 1. In a vulcanizer, the combination, with a base-ring provided with a rib upon its upper face, of a bowl provided with an upper out wardly-extending annular flange having its outer edge projected vertically downward, whereby an undercut recess is formed for the reception of the said rib, substantially as shown and described.

2. In a device of the character described, the combination, with a base,-of an exteriorlythreaded ring removably attached to the base, a bowl adapted to be supported by the ring, and a cap suitably threaded for engagement with the threaded surface of the ring, substantially as shown and described.

3. In a device of the character described, the combination, with a base or stand and a ring removably attached thereto, provided with an upper peripheral rib and an exteriorlythreaded surface, of a bowl the upper edge of which is carried outward and downward, forming an under groove adapted to receive the rib of the ring, and a threaded cap adapted to be screwed upon the ring, sub stantially as shown and described.

4. In a device of the character described, the combination, with a stand or base provided with upper exterior recesses, a ring adapted for engagement with the upper surface of the stand, provided with an exterior thread and an annular rib integral with its upper edge, and lugs connected with the ring, ring over the pulley, as and for the purpose entering the recesses of the base and attached specified. to said base, of a bowl the upper edge of Which is carried outward and provided with JAMES FERGUS' a groove in its under surface adapted to re- W'itnesses:

ceive the rib of the ring, and an interiorly- WILLIAM TAIT,

threaded cap adapted to be screwed upon the J os. PARKES, Jr, 

